Albus politely stands off to one side, letting Gellert heave himself with some semblance of privacy. The curse does seem to be well and truly gone, and the rest is just cleansing -- Gellert's body ridding him of the toxins that had briefly aided him.

When Gellert is finished and stumbles back to him, he catches him in his grasp, looking grateful and still worried all at once. Still, there is a hint of relief in his expression as he pulls Gellert against him, holding him shaky against him. "It is. It's gone. It's all right."